libpcre: Heap integer overflow

Background

libpcre is a library providing functions for Perl-compatible regular expressions.

Description

libpcre fails to check certain quantifier values in regular expressions for sane values.

Impact

An attacker could possibly exploit this vulnerability to execute arbitrary code by sending specially crafted regular expressions to applications making use of the libpcre library.

Workaround

There is no known workaround at this time.

Resolution

All libpcre users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=dev-libs/libpcre-6.3"